摘要:
A semiconductor device includes a semiconductor substrate having a first groove, a word line in the first groove, and a buried insulating film in the first groove. The buried insulating film covers the word line. The buried insulating film comprises a silicon nitride film.
摘要:
A semiconductor memory device includes a memory cell portion and a peripheral circuit portion. The memory cell portion includes a pillar capacitor with a lower electrode, a dielectric film, and an upper electrode sequentially formed on a side surface of a first insulating portion which is parallel to a predetermined direction, and a transistor electrically connected to the lower electrode. The peripheral circuit portion includes a plate electrode, a cylinder capacitor with an upper electrode, a dielectric film, and a lower electrode sequentially formed on a side surface of the plate electrode which is parallel to the predetermined direction, and a transistor electrically connected to the lower electrode.
摘要:
Openings are formed in first and second mask layers. Next, diameter of the opening in the second mask layer is enlarged so that the diameter of the opening in the second mask layer becomes larger by a length X than diameter of the opening in the first mask layer. Thereafter, mask material is formed into the opening in the second mask layer, to form a cavity with a diameter X within the opening in the second mask layer. There is formed a mask which includes the second mask layer and the mask material having therein opening including the cavity.
摘要:
In a method of forming a dense contact-hole pattern in a semiconductor device, the method uses a self-align double patterning technique including forming a square or triangular lattice dot pattern on double layers of mask materials, forming first holes in the upper mask material and second holes wider than the first holes in the lower mask material by double patterning, additionally forming an insulating layer to a thickness such that the first holes are closed such that voids are left in the second holes, and transferring the shape of the voids to a base layer. The hole pattern formed thereby has a high precision, with a density thereof being double or triple that of a pattern formed by a lithography technique.
摘要:
In a method for fabricating a semiconductor device, this method comprising the steps of: forming a contact hole (208) so as to cause the etching stopper (205) on the substrate (201) to be exposed; removing an exposed etching stopper (205) on the substrate; filling the contact hole (208) to form a contact plug (210); removing a film (209) that is deposited on the interlayer insulation film (206), so as to expose the contact plug (210); etching the interlayer insulation film (206) and removing the etching stopper (205) on the gate electrode (203); forming an interlayer insulation film (211); etching the interlayer insulation film (211) so as to expose the etching stopper (205) on a diffusion layer (231) and etching the insulation film (204) of the gate electrode (203), so as to form contact holes (213) on the diffusion layer (231) and the gate electrode (203); removing the etching stopper (205) exposed on the diffusion layer (231); and filling the contact hole (213), so as to form the contact plugs (215).
摘要:
A semiconductor device comprising: a first semiconductor chip provided with a first function, including a memory element but not including a peripheral circuit; first connection terminals provided in the first semiconductor chip; a second semiconductor chip provided with a second function, including a peripheral circuit but not including a memory element; and second connection terminals provided in the second semiconductor chip, wherein the first semiconductor chip and the second semiconductor chip are stacked on one another by causing the first connection terminals and the second connection terminals to come into contact with one another.
摘要:
A semiconductor device includes a semiconductor substrate having a first groove, a word line in the first groove, and a buried insulating film in the first groove. The buried insulating film covers the word line. The buried insulating film comprises a silicon nitride film.
摘要:
Openings are formed in first and second mask layers. Next, diameter of the opening in the second mask layer is enlarged so that the diameter of the opening in the second mask layer becomes larger by a length X than diameter of the opening in the first mask layer. Thereafter, mask material is formed into the opening in the second mask layer, to form a cavity with a diameter X within the opening in the second mask layer. There is formed a mask which includes the second mask layer and the mask material having therein opening including the cavity.
摘要:
The semiconductor device comprises a first region, a guard ring surrounding the first region, and a second region outside of the guard ring. The first region includes a first electrode made of a first film which has conductivity. A surface of the first electrode in the first region is not covered with the second film. The guard ring includes the first film covering an inner wall of a groove having a recess shape, and a second film as an insulating film covering at least one portion of a surface of the first film in the groove.
摘要:
A method of forming a pattern includes the following processes. A first lithography process is performed. The first lithography process is applied to a first region of a substrate. A second lithography process is performed. The second lithography process is applied to the first region and to a second region of the substrate, to form a first pattern in the first region, and to form a second pattern in the second region. The first pattern is defined by a first dimension. The first dimension is smaller than a resolution limit of lithography. The second pattern is defined by a second dimension. The second dimension is equal to or greater than the resolution limit of lithography.